Calo and Duzon Group 6

Solve this equation using Perfect Square. x²+3 =6

• a.   X = ±3i

• b.   X = ±5i

• c.   X = ±4i

• d.    X = ±1i

  Perfect square: x² = 25 √x² = √25

• a.   X = ±4

• b.  X = ±6

• c. X = ±3

• d. X = ±5

Solve this equation using completing the square: x² + 4x – 5 = 0

• a.   x+2= ±9

  x+ -2 ±9

• b.  x-2= ±9

  x+ +2 ±9

• c.   x+3= ±9

  x+ -3 ±9

• d.   x-3= ±9

  x+ +3 ±9

Completing the square: x² + 6x + 8

• a.   X = +3 ± 1

• b.   X = +6 ± 1

• c.   X = -3 ± 1

• d.   X = -6 ± 1

1.    Solve this using quadratic formula: 4x²-6x+5=0.

Since it is quadratic formula, we will only give two choices.

• a.   -6±4i√11

  -----------

       8

• b.   +6±4i√12

       4

   5x²-7x+6=0

• a.   X1= +7+i√71 over 10

  X2 =+7-i√71 over 10

• b.   X1= +8+i√70 over 10

  X2 =+8-i√72 over 10

• c.   X1= -7+i√71 over 10

  X2 =-7-i√71 over 10

• d.   X1= +9+i√90 over 10

  X2 =+9i√81 over 10

  Factoring quadratic equation: T²+8T+16=0

• a.   T= -4

• b.   T= +4

• c.   T= -8

• d.   T= +8

  81 – 4x²=0

• a.   X1 = - 9 over 2

  X2 = 9 over 2

• b.   X1 = + 9 over 2

  X2 = 9 over 2

• c.   X1 = - 8 over 2

  X2 = 8 over 2

• d.   X1 = + 8 over 2

  X2 = 8 over 2

  Square root method: x²-100=0

• a.   X1= +10

  X2 = - 10

• b.   X1 = -10

  X2 = 10

• c.   X1 = 10

  X2 = 10

• d.   X1 = -5

  X2 = 5

x²-64=0

• a.   x1= -10

  x2 = +10

• b.   x1 = -5

  x2= +5

• c.   x1= -8

  x2= 10

• d.   x1= +5

  x2 = -5